Anti-friction dredging-pump



(No Model.) 3 Sheets-Sheet l.

' O. H. BOOTH.

ANTI-FRICTION DREDGING PUMP.

Patented Mar. 10, 1885.

N. PETERS, Phwm-Lilha m hnr. Wmhin ton, n. c.

Y (NQModeL) 3 SheetsSheet G. H. BOOTH.

ANTI-FRICTION DREDGING PUMP. I No. 313mg. Patented Mar. 10,1885.

N, PETERS, F'hnlmLilhognpMr. Washin ton, D.c.

(No Model.) 3 Sheets Sheet 3. G. H. BOOTH.

ANTI-FRICTION DREDGING PUMP. N0. 313,649. Patented Mar. 10, 1885.

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llwrrnn STATES arnrrr l i iifi li- CALEB H. BOOTH, OF DUBUQUE, IOXVA.

ANTI FRlCTlON DREDGlNG PUWiP.

:5PEC'IPICA'JJION forming part of Letters Patent No. 313,649, dated March 10,1885.

Application filed May 5, 1884.

(No model.)

To all whom it may concern:

Be'it known that I, CALEB H. Boo'rn, a citizen of the United States, residing at Dnbuque, in the county of Dubuque and State of Iowa, have invented a new and useful Anti- Friction Dredging-Pump, of which the following is a specification.

The object of my invention is to remove,by pumping, from ocean and river bars, bottoms of lakes, rivers, harbors, &c., sand and other material mixed with water and force it gitudinal section, on an enlarged scale, of one of the pump-cylinders, diaphragm-chambers, and valvechests on the line 1 2, Fig. 2. Fig. 5 is a cross-section, on same scale as Fig. 4, of the two pump-cylinders, diaphragmchambers, and valve-chests on the line 8 4, Fig. 2. Fig. 6 is a sectional view on line 6 6 of Fig. 7, and Fig. 7 is a horizontal sectional view on line 5 5 of Fig. 1. i

' Similar letters refer to similar parts throughout the several views.

A A represent two pump-cylinders pro vidcd with pistons B B, attached to one end of the pistonrods b b, the other ends being at"- tached to the cross-heads O 0, working on the slides (Z d, by means of the connecting-rods e e and the cranksff, the cianks'ff being placed at right angles to each other on the shaft 9 and driven by the gears 71 and t, the gear t being attached to a shaft, j, which is operated by a steam-engine or other suitable power. Each pump;cylinder A A has two hollow chambers, 7c is, of aspherical or spheroidal form, attached one at each end. Each of these chambers 7c is provided with a flexible diaphragm, Z, of leather, rubber, or other suitable material. The diaphragms Z Z Z Z are formed or molded into a semi-spherical shape, so as to havea capacity in their full movement or pulsation equal to or slightly exceeding that. of one stroke of their corresponding pump-cylinders A A,thus giving the cylinder its full amount of liquid to supply its capacity without any strain on the diaphragm.

To the diaphragm-chambers k 70 7t it are at tached two double valve-chests,m m,placed at right angles to the pnmpcylinders A A, as shown in Fig. 2. Each valve-chest m is divided into two compartments, N N, by the partition 11, extending the entire length of the chest, and so arranged that the separate compartments communicate by one opening each with their respective diaphragnrchambers, each diaphragmchamber receiving and discharging through its respective opening S. Each valveehest m is provided with suction-valves 0 0, discharge-valves p p, and connected with the suction-pipe P on one end and with the discharge-pipe q on the other end, as shown in Fig. 5.

It is an air-vessel attached to the dischargepipe q, to equalize the flow of the discharge.

The operation of the pump is as follows: The piston B in each cylinder A is first moved to one end of the stroke, as shown on Fig. 4, and the entire space between the piston B and the nearest flexible diaphragm Z is then filled with pure water, oil, or other suitable liquid. The piston is then moved to the other end of the stroke, and the corresponding space between the piston B and flexible diaphragm Z filled in like manner. The dredge-pump is now ready for operation. The motionof the pistons B B acting on the contained liquid communicates a corresponding action or inversion to the diaphragms Z Z Z Z. The movephragms in pumps arenot new, the same being phlegm-chambers K, of a single flexible dia- IO shown in patent issued to H.A.Jan1ies0n,June phragm semi-spherical in cross-section and in 10, 1877, No. 192,072, and in the patent issued vtroduoed between the valve-chests of a pump,

to W. Shearer, November 29,1S70,N0. 109,678. and moving pistons or plungers substantially 5 I therefore do not claim such diaphragms, as and for the purpose set forth.

broadly. CALEB H. BOOTH.

What I claim as my invention, and desire Vitnesses: 1\ to secure by Letters Patent, is.-- FREDERIO THORNELY, v The combinatioinwith the independent diw JOSHUA D. CARTER. 

